<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div id="lightbox" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
<div class="modal-dialog">
<button type="button" class="close hidden" data-dismiss="modal" aria-hidden="true">×</button>
<div class="modal-content">
<div class="modal-body">
<h2>Demo Lightbox Ad</h2>
<img src="http://placehold.it/600x300" alt="" />
</div>
</div>
</div>
</div>
<script>
$(document).ready(function() {
var $lightbox = $('#lightbox');
$('[data-target="#lightbox"]').on('click', function(event) {
var $img = $(this).find('img'),
src = $img.attr('src'),
alt = $img.attr('alt'),
css = {
'maxWidth': $(window).width() - 100,
'maxHeight': $(window).height() - 100
};
$lightbox.find('.close').addClass('hidden');
$lightbox.find('img').attr('src', src);
$lightbox.find('img').attr('alt', alt);
$lightbox.find('img').css(css);
});
